Tetra Replacement UV Bulb (Pressurized Filter)
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Brand: Tetra Pond
These UV bulbs are for the Tetra Pressurized Filter. They will not fit in the Tetra Green Free stand-alone UV filter. Available in 9w for the 1500 gallon filter, or 18w for the 2500 or 4000 gallon pressurized filter. This bulb has four prongs.